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/* Definitions of target machine for GNU compiler, for Sun SPARC. Copyright (C) 1987, 1988, 1989, 1992, 1994, 1995, 1996, 1997, 1998, 1999 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. Contributed by Michael Tiemann (tiemann@cygnus.com). 64-bit SPARC-V9 support by Michael Tiemann, Jim Wilson, and Doug Evans, at Cygnus Support. This file is part of GCC. GCC is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version. GCC is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with GCC; see the file COPYING3. If not see <http://www.gnu.org/licenses/>. */ #include "config/vxworks-dummy.h" /* Note that some other tm.h files include this one and then override whatever definitions are necessary. */ /* Define the specific costs for a given cpu */ struct processor_costs { /* Integer load */ const int int_load; /* Integer signed load */ const int int_sload; /* Integer zeroed load */ const int int_zload; /* Float load */ const int float_load; /* fmov, fneg, fabs */ const int float_move; /* fadd, fsub */ const int float_plusminus; /* fcmp */ const int float_cmp; /* fmov, fmovr */ const int float_cmove; /* fmul */ const int float_mul; /* fdivs */ const int float_div_sf; /* fdivd */ const int float_div_df; /* fsqrts */ const int float_sqrt_sf; /* fsqrtd */ const int float_sqrt_df; /* umul/smul */ const int int_mul; /* mulX */ const int int_mulX; /* integer multiply cost for each bit set past the most significant 3, so the formula for multiply cost becomes: if (rs1 < 0) highest_bit = highest_clear_bit(rs1); else highest_bit = highest_set_bit(rs1); if (highest_bit < 3) highest_bit = 3; cost = int_mul{,X} + ((highest_bit - 3) / int_mul_bit_factor); A value of zero indicates that the multiply costs is fixed, and not variable. */ const int int_mul_bit_factor; /* udiv/sdiv */ const int int_div; /* divX */ const int int_divX; /* movcc, movr */ const int int_cmove; /* penalty for shifts, due to scheduling rules etc. */ const int shift_penalty; }; extern const struct processor_costs *sparc_costs; /* Target CPU builtins. FIXME: Defining sparc is for the benefit of Solaris only; otherwise just define __sparc__. Sadly the headers are such a mess there is no Solaris-specific header. */ #define TARGET_CPU_CPP_BUILTINS() \ do \ { \ builtin_define_std ("sparc"); \ if (TARGET_64BIT) \ { \ builtin_assert ("cpu=sparc64"); \ builtin_assert ("machine=sparc64"); \ } \ else \ { \ builtin_assert ("cpu=sparc"); \ builtin_assert ("machine=sparc"); \ } \ } \ while (0) /* Specify this in a cover file to provide bi-architecture (32/64) support. */ /* #define SPARC_BI_ARCH */ /* Macro used later in this file to determine default architecture. */ #define DEFAULT_ARCH32_P ((TARGET_DEFAULT & MASK_64BIT) == 0) /* TARGET_ARCH{32,64} are the main macros to decide which of the two architectures to compile for. We allow targets to choose compile time or runtime selection. */ #ifdef IN_LIBGCC2 #if defined(__sparcv9) || defined(__arch64__) #define TARGET_ARCH32 0 #else #define TARGET_ARCH32 1 #endif /* sparc64 */ #else #ifdef SPARC_BI_ARCH #define TARGET_ARCH32 (! TARGET_64BIT) #else #define TARGET_ARCH32 (DEFAULT_ARCH32_P) #endif /* SPARC_BI_ARCH */ #endif /* IN_LIBGCC2 */ #define TARGET_ARCH64 (! TARGET_ARCH32) /* Code model selection in 64-bit environment. The machine mode used for addresses is 32-bit wide: TARGET_CM_32: 32-bit address space. It is the code model used when generating 32-bit code. The machine mode used for addresses is 64-bit wide: TARGET_CM_MEDLOW: 32-bit address space. The executable must be in the low 32 bits of memory. This avoids generating %uhi and %ulo terms. Programs can be statically or dynamically linked. TARGET_CM_MEDMID: 44-bit address space. The executable must be in the low 44 bits of memory, and the %[hml]44 terms are used. The text and data segments have a maximum size of 2GB (31-bit span). The maximum offset from any instruction to the label _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span). TARGET_CM_MEDANY: 64-bit address space. The text and data segments have a maximum size of 2GB (31-bit span) and may be located anywhere in memory. The maximum offset from any instruction to the label _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span). TARGET_CM_EMBMEDANY: 64-bit address space. The text and data segments have a maximum size of 2GB (31-bit span) and may be located anywhere in memory. The global register %g4 contains the start address of the data segment. Programs are statically linked and PIC is not supported. Different code models are not supported in 32-bit environment. */ enum cmodel { CM_32, CM_MEDLOW, CM_MEDMID, CM_MEDANY, CM_EMBMEDANY }; /* One of CM_FOO. */ extern enum cmodel sparc_cmodel; /* V9 code model selection. */ #define TARGET_CM_MEDLOW (sparc_cmodel == CM_MEDLOW) #define TARGET_CM_MEDMID (sparc_cmodel == CM_MEDMID) #define TARGET_CM_MEDANY (sparc_cmodel == CM_MEDANY) #define TARGET_CM_EMBMEDANY (sparc_cmodel == CM_EMBMEDANY) #define SPARC_DEFAULT_CMODEL CM_32 /* The SPARC-V9 architecture defines a relaxed memory ordering model (RMO) which requires the following macro to be true if enabled. Prior to V9, there are no instructions to even talk about memory synchronization. Note that the UltraSPARC III processors don't implement RMO, unlike the UltraSPARC II processors. Niagara and Niagara-2 do not implement RMO either. Default to false; for example, Solaris never enables RMO, only ever uses total memory ordering (TMO). */ #define SPARC_RELAXED_ORDERING false /* Do not use the .note.GNU-stack convention by default. */ #define NEED_INDICATE_EXEC_STACK 0 /* This is call-clobbered in the normal ABI, but is reserved in the home grown (aka upward compatible) embedded ABI. */ #define EMBMEDANY_BASE_REG "%g4" /* Values of TARGET_CPU_DEFAULT, set via -D in the Makefile, and specified by the user via --with-cpu=foo. This specifies the cpu implementation, not the architecture size. */ /* Note that TARGET_CPU_v9 is assumed to start the list of 64-bit capable cpu's. */ #define TARGET_CPU_sparc 0 #define TARGET_CPU_v7 0 /* alias for previous */ #define TARGET_CPU_sparclet 1 #define TARGET_CPU_sparclite 2 #define TARGET_CPU_v8 3 /* generic v8 implementation */ #define TARGET_CPU_supersparc 4 #define TARGET_CPU_hypersparc 5 #define TARGET_CPU_sparc86x 6 #define TARGET_CPU_sparclite86x 6 #define TARGET_CPU_v9 7 /* generic v9 implementation */ #define TARGET_CPU_sparcv9 7 /* alias */ #define TARGET_CPU_sparc64 7 /* alias */ #define TARGET_CPU_ultrasparc 8 #define TARGET_CPU_ultrasparc3 9 #define TARGET_CPU_niagara 10 #define TARGET_CPU_niagara2 11 #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \ || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \ || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \ || TARGET_CPU_DEFAULT == TARGET_CPU_niagara \ || TARGET_CPU_DEFAULT == TARGET_CPU_niagara2 #define CPP_CPU32_DEFAULT_SPEC "" #define ASM_CPU32_DEFAULT_SPEC "" #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 /* ??? What does Sun's CC pass? */ #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" /* ??? It's not clear how other assemblers will handle this, so by default use GAS. Sun's Solaris assembler recognizes -xarch=v8plus, but this case is handled in sol2.h. */ #define ASM_CPU64_DEFAULT_SPEC "-Av9" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" #define ASM_CPU64_DEFAULT_SPEC "-Av9a" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" #define ASM_CPU64_DEFAULT_SPEC "-Av9b" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" #define ASM_CPU64_DEFAULT_SPEC "-Av9b" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2 #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" #define ASM_CPU64_DEFAULT_SPEC "-Av9b" #endif #else #define CPP_CPU64_DEFAULT_SPEC "" #define ASM_CPU64_DEFAULT_SPEC "" #if TARGET_CPU_DEFAULT == TARGET_CPU_sparc \ || TARGET_CPU_DEFAULT == TARGET_CPU_v8 #define CPP_CPU32_DEFAULT_SPEC "" #define ASM_CPU32_DEFAULT_SPEC "" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclet #define CPP_CPU32_DEFAULT_SPEC "-D__sparclet__" #define ASM_CPU32_DEFAULT_SPEC "-Asparclet" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite__" #define ASM_CPU32_DEFAULT_SPEC "-Asparclite" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_supersparc #define CPP_CPU32_DEFAULT_SPEC "-D__supersparc__ -D__sparc_v8__" #define ASM_CPU32_DEFAULT_SPEC "" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_hypersparc #define CPP_CPU32_DEFAULT_SPEC "-D__hypersparc__ -D__sparc_v8__" #define ASM_CPU32_DEFAULT_SPEC "" #endif #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite86x #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite86x__" #define ASM_CPU32_DEFAULT_SPEC "-Asparclite" #endif #endif #if !defined(CPP_CPU32_DEFAULT_SPEC) || !defined(CPP_CPU64_DEFAULT_SPEC) #error Unrecognized value in TARGET_CPU_DEFAULT. #endif #ifdef SPARC_BI_ARCH #define CPP_CPU_DEFAULT_SPEC \ (DEFAULT_ARCH32_P ? "\ %{m64:" CPP_CPU64_DEFAULT_SPEC "} \ %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \ " : "\ %{m32:" CPP_CPU32_DEFAULT_SPEC "} \ %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \ ") #define ASM_CPU_DEFAULT_SPEC \ (DEFAULT_ARCH32_P ? "\ %{m64:" ASM_CPU64_DEFAULT_SPEC "} \ %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \ " : "\ %{m32:" ASM_CPU32_DEFAULT_SPEC "} \ %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \ ") #else /* !SPARC_BI_ARCH */ #define CPP_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? CPP_CPU32_DEFAULT_SPEC : CPP_CPU64_DEFAULT_SPEC) #define ASM_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? ASM_CPU32_DEFAULT_SPEC : ASM_CPU64_DEFAULT_SPEC) #endif /* !SPARC_BI_ARCH */ /* Define macros to distinguish architectures. */ /* Common CPP definitions used by CPP_SPEC amongst the various targets for handling -mcpu=xxx switches. */ #define CPP_CPU_SPEC "\ %{msoft-float:-D_SOFT_FLOAT} \ %{mcypress:} \ %{msparclite:-D__sparclite__} \ %{mf930:-D__sparclite__} %{mf934:-D__sparclite__} \ %{mv8:-D__sparc_v8__} \ %{msupersparc:-D__supersparc__ -D__sparc_v8__} \ %{mcpu=sparclet:-D__sparclet__} %{mcpu=tsc701:-D__sparclet__} \ %{mcpu=sparclite:-D__sparclite__} \ %{mcpu=f930:-D__sparclite__} %{mcpu=f934:-D__sparclite__} \ %{mcpu=v8:-D__sparc_v8__} \ %{mcpu=supersparc:-D__supersparc__ -D__sparc_v8__} \ %{mcpu=hypersparc:-D__hypersparc__ -D__sparc_v8__} \ %{mcpu=sparclite86x:-D__sparclite86x__} \ %{mcpu=v9:-D__sparc_v9__} \ %{mcpu=ultrasparc:-D__sparc_v9__} \ %{mcpu=ultrasparc3:-D__sparc_v9__} \ %{mcpu=niagara:-D__sparc_v9__} \ %{mcpu=niagara2:-D__sparc_v9__} \ %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:%(cpp_cpu_default)}}}}}}} \ " #define CPP_ARCH32_SPEC "" #define CPP_ARCH64_SPEC "-D__arch64__" #define CPP_ARCH_DEFAULT_SPEC \ (DEFAULT_ARCH32_P ? CPP_ARCH32_SPEC : CPP_ARCH64_SPEC) #define CPP_ARCH_SPEC "\ %{m32:%(cpp_arch32)} \ %{m64:%(cpp_arch64)} \ %{!m32:%{!m64:%(cpp_arch_default)}} \ " /* Macros to distinguish endianness. */ #define CPP_ENDIAN_SPEC "\ %{mlittle-endian:-D__LITTLE_ENDIAN__} \ %{mlittle-endian-data:-D__LITTLE_ENDIAN_DATA__}" /* Macros to distinguish the particular subtarget. */ #define CPP_SUBTARGET_SPEC "" #define CPP_SPEC "%(cpp_cpu) %(cpp_arch) %(cpp_endian) %(cpp_subtarget)" /* Prevent error on `-sun4' and `-target sun4' options. */ /* This used to translate -dalign to -malign, but that is no good because it can't turn off the usual meaning of making debugging dumps. */ /* Translate old style -m<cpu> into new style -mcpu=<cpu>. ??? Delete support for -m<cpu> for 2.9. */ #define CC1_SPEC "\ %{sun4:} %{target:} \ %{mcypress:-mcpu=cypress} \ %{msparclite:-mcpu=sparclite} %{mf930:-mcpu=f930} %{mf934:-mcpu=f934} \ %{mv8:-mcpu=v8} %{msupersparc:-mcpu=supersparc} \ " /* Override in target specific files. */ #define ASM_CPU_SPEC "\ %{mcpu=sparclet:-Asparclet} %{mcpu=tsc701:-Asparclet} \ %{msparclite:-Asparclite} \ %{mf930:-Asparclite} %{mf934:-Asparclite} \ %{mcpu=sparclite:-Asparclite} \ %{mcpu=sparclite86x:-Asparclite} \ %{mcpu=f930:-Asparclite} %{mcpu=f934:-Asparclite} \ %{mv8plus:-Av8plus} \ %{mcpu=v9:-Av9} \ %{mcpu=ultrasparc:%{!mv8plus:-Av9a}} \ %{mcpu=ultrasparc3:%{!mv8plus:-Av9b}} \ %{mcpu=niagara:%{!mv8plus:-Av9b}} \ %{mcpu=niagara2:%{!mv8plus:-Av9b}} \ %{!mcpu*:%{!mcypress:%{!msparclite:%{!mf930:%{!mf934:%{!mv8:%{!msupersparc:%(asm_cpu_default)}}}}}}} \ " /* Word size selection, among other things. This is what GAS uses. Add %(asm_arch) to ASM_SPEC to enable. */ #define ASM_ARCH32_SPEC "-32" #ifdef HAVE_AS_REGISTER_PSEUDO_OP #define ASM_ARCH64_SPEC "-64 -no-undeclared-regs" #else #define ASM_ARCH64_SPEC "-64" #endif #define ASM_ARCH_DEFAULT_SPEC \ (DEFAULT_ARCH32_P ? ASM_ARCH32_SPEC : ASM_ARCH64_SPEC) #define ASM_ARCH_SPEC "\ %{m32:%(asm_arch32)} \ %{m64:%(asm_arch64)} \ %{!m32:%{!m64:%(asm_arch_default)}} \ " #ifdef HAVE_AS_RELAX_OPTION #define ASM_RELAX_SPEC "%{!mno-relax:-relax}" #else #define ASM_RELAX_SPEC "" #endif /* Special flags to the Sun-4 assembler when using pipe for input. */ #define ASM_SPEC "\ %{R} %{!pg:%{!p:%{fpic|fPIC|fpie|fPIE:-k}}} %{keep-local-as-symbols:-L} \ %(asm_cpu) %(asm_relax)" #define AS_NEEDS_DASH_FOR_PIPED_INPUT /* This macro defines names of additional specifications to put in the specs that can be used in various specifications like CC1_SPEC. Its definition is an initializer with a subgrouping for each command option. Each subgrouping contains a string constant, that defines the specification name, and a string constant that used by the GCC driver program. Do not define this macro if it does not need to do anything. */ #define EXTRA_SPECS \ { "cpp_cpu", CPP_CPU_SPEC }, \ { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \ { "cpp_arch32", CPP_ARCH32_SPEC }, \ { "cpp_arch64", CPP_ARCH64_SPEC }, \ { "cpp_arch_default", CPP_ARCH_DEFAULT_SPEC },\ { "cpp_arch", CPP_ARCH_SPEC }, \ { "cpp_endian", CPP_ENDIAN_SPEC }, \ { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ { "asm_cpu", ASM_CPU_SPEC }, \ { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \ { "asm_arch32", ASM_ARCH32_SPEC }, \ { "asm_arch64", ASM_ARCH64_SPEC }, \ { "asm_relax", ASM_RELAX_SPEC }, \ { "asm_arch_default", ASM_ARCH_DEFAULT_SPEC },\ { "asm_arch", ASM_ARCH_SPEC }, \ SUBTARGET_EXTRA_SPECS #define SUBTARGET_EXTRA_SPECS /* Because libgcc can generate references back to libc (via .umul etc.) we have to list libc again after the second libgcc. */ #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G %L" #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int") #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int") /* ??? This should be 32 bits for v9 but what can we do? */ #define WCHAR_TYPE "short unsigned int" #define WCHAR_TYPE_SIZE 16 /* Show we can debug even without a frame pointer. */ #define CAN_DEBUG_WITHOUT_FP /* Option handling. */ #define OVERRIDE_OPTIONS sparc_override_options () /* Mask of all CPU selection flags. */ #define MASK_ISA \ (MASK_V8 + MASK_SPARCLITE + MASK_SPARCLET + MASK_V9 + MASK_DEPRECATED_V8_INSNS) /* TARGET_HARD_MUL: Use hardware multiply instructions but not %y. TARGET_HARD_MUL32: Use hardware multiply instructions with rd %y to get high 32 bits. False in V8+ or V9 because multiply stores a 64-bit result in a register. */ #define TARGET_HARD_MUL32 \ ((TARGET_V8 || TARGET_SPARCLITE \ || TARGET_SPARCLET || TARGET_DEPRECATED_V8_INSNS) \ && ! TARGET_V8PLUS && TARGET_ARCH32) #define TARGET_HARD_MUL \ (TARGET_V8 || TARGET_SPARCLITE || TARGET_SPARCLET \ || TARGET_DEPRECATED_V8_INSNS || TARGET_V8PLUS) /* MASK_APP_REGS must always be the default because that's what FIXED_REGISTERS is set to and -ffixed- is processed before CONDITIONAL_REGISTER_USAGE is called (where we process -mno-app-regs). */ #define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU) /* Processor type. These must match the values for the cpu attribute in sparc.md. */ enum processor_type { PROCESSOR_V7, PROCESSOR_CYPRESS, PROCESSOR_V8, PROCESSOR_SUPERSPARC, PROCESSOR_SPARCLITE, PROCESSOR_F930, PROCESSOR_F934, PROCESSOR_HYPERSPARC, PROCESSOR_SPARCLITE86X, PROCESSOR_SPARCLET, PROCESSOR_TSC701, PROCESSOR_V9, PROCESSOR_ULTRASPARC, PROCESSOR_ULTRASPARC3, PROCESSOR_NIAGARA, PROCESSOR_NIAGARA2 }; /* This is set from -m{cpu,tune}=xxx. */ extern enum processor_type sparc_cpu; /* Recast the cpu class to be the cpu attribute. Every file includes us, but not every file includes insn-attr.h. */ #define sparc_cpu_attr ((enum attr_cpu) sparc_cpu) /* Support for a compile-time default CPU, et cetera. The rules are: --with-cpu is ignored if -mcpu is specified. --with-tune is ignored if -mtune is specified. --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu are specified. */ #define OPTION_DEFAULT_SPECS \ {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \ {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ {"float", "%{!msoft-float:%{!mhard-float:%{!fpu:%{!no-fpu:-m%(VALUE)-float}}}}" } /* sparc_select[0] is reserved for the default cpu. */ struct sparc_cpu_select { const char *string; const char *const name; const int set_tune_p; const int set_arch_p; }; extern struct sparc_cpu_select sparc_select[]; /* target machine storage layout */ /* Define this if most significant bit is lowest numbered in instructions that operate on numbered bit-fields. */ #define BITS_BIG_ENDIAN 1 /* Define this if most significant byte of a word is the lowest numbered. */ #define BYTES_BIG_ENDIAN 1 /* Define this if most significant word of a multiword number is the lowest numbered. */ #define WORDS_BIG_ENDIAN 1 /* Define this to set the endianness to use in libgcc2.c, which can not depend on target_flags. */ #if defined (__LITTLE_ENDIAN__) || defined(__LITTLE_ENDIAN_DATA__) #define LIBGCC2_WORDS_BIG_ENDIAN 0 #else #define LIBGCC2_WORDS_BIG_ENDIAN 1 #endif #define MAX_BITS_PER_WORD 64 /* Width of a word, in units (bytes). */ #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4) #ifdef IN_LIBGCC2 #define MIN_UNITS_PER_WORD UNITS_PER_WORD #else #define MIN_UNITS_PER_WORD 4 #endif #define UNITS_PER_SIMD_WORD(MODE) (TARGET_VIS ? 8 : UNITS_PER_WORD) /* Now define the sizes of the C data types. */ #define SHORT_TYPE_SIZE 16 #define INT_TYPE_SIZE 32 #define LONG_TYPE_SIZE (TARGET_ARCH64 ? 64 : 32) #define LONG_LONG_TYPE_SIZE 64 #define FLOAT_TYPE_SIZE 32 #define DOUBLE_TYPE_SIZE 64 /* LONG_DOUBLE_TYPE_SIZE is defined per OS even though the SPARC ABI says that it is 128-bit wide. */ /* #define LONG_DOUBLE_TYPE_SIZE 128 */ /* The widest floating-point format really supported by the hardware. */ #define WIDEST_HARDWARE_FP_SIZE 64 /* Width in bits of a pointer. This is the size of ptr_mode. */ #define POINTER_SIZE (TARGET_PTR64 ? 64 : 32) /* This is the machine mode used for addresses. */ #define Pmode (TARGET_ARCH64 ? DImode : SImode) /* If we have to extend pointers (only when TARGET_ARCH64 and not TARGET_PTR64), we want to do it unsigned. This macro does nothing if ptr_mode and Pmode are the same. */ #define POINTERS_EXTEND_UNSIGNED 1 /* Allocation boundary (in *bits*) for storing arguments in argument list. */ #define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32) /* Boundary (in *bits*) on which stack pointer should be aligned. */ /* FIXME, this is wrong when TARGET_ARCH64 and TARGET_STACK_BIAS, because then %sp+2047 is 128-bit aligned so %sp is really only byte-aligned. */ #define STACK_BOUNDARY (TARGET_ARCH64 ? 128 : 64) /* Temporary hack until the FIXME above is fixed. */ #define SPARC_STACK_BOUNDARY_HACK (TARGET_ARCH64 && TARGET_STACK_BIAS) /* ALIGN FRAMES on double word boundaries */ #define SPARC_STACK_ALIGN(LOC) \ (TARGET_ARCH64 ? (((LOC)+15) & ~15) : (((LOC)+7) & ~7)) /* Allocation boundary (in *bits*) for the code of a function. */ #define FUNCTION_BOUNDARY 32 /* Alignment of field after `int : 0' in a structure. */ #define EMPTY_FIELD_BOUNDARY (TARGET_ARCH64 ? 64 : 32) /* Every structure's size must be a multiple of this. */ #define STRUCTURE_SIZE_BOUNDARY 8 /* A bit-field declared as `int' forces `int' alignment for the struct. */ #define PCC_BITFIELD_TYPE_MATTERS 1 /* No data type wants to be aligned rounder than this. */ #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64) /* The best alignment to use in cases where we have a choice. */ #define FASTEST_ALIGNMENT 64 /* Define this macro as an expression for the alignment of a structure (given by STRUCT as a tree node) if the alignment computed in the usual way is COMPUTED and the alignment explicitly specified was SPECIFIED. The default is to use SPECIFIED if it is larger; otherwise, use the smaller of COMPUTED and `BIGGEST_ALIGNMENT' */ #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ (TARGET_FASTER_STRUCTS ? \ ((TREE_CODE (STRUCT) == RECORD_TYPE \ || TREE_CODE (STRUCT) == UNION_TYPE \ || TREE_CODE (STRUCT) == QUAL_UNION_TYPE) \ && TYPE_FIELDS (STRUCT) != 0 \ ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \ : MAX ((COMPUTED), (SPECIFIED))) \ : MAX ((COMPUTED), (SPECIFIED))) /* Make strings word-aligned so strcpy from constants will be faster. */ #define CONSTANT_ALIGNMENT(EXP, ALIGN) \ ((TREE_CODE (EXP) == STRING_CST \ && (ALIGN) < FASTEST_ALIGNMENT) \ ? FASTEST_ALIGNMENT : (ALIGN)) /* Make arrays of chars word-aligned for the same reasons. */ #define DATA_ALIGNMENT(TYPE, ALIGN) \ (TREE_CODE (TYPE) == ARRAY_TYPE \ && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) /* Make local arrays of chars word-aligned for the same reasons. */ #define LOCAL_ALIGNMENT(TYPE, ALIGN) DATA_ALIGNMENT (TYPE, ALIGN) /* Set this nonzero if move instructions will actually fail to work when given unaligned data. */ #define STRICT_ALIGNMENT 1 /* Things that must be doubleword aligned cannot go in the text section, because the linker fails to align the text section enough! Put them in the data section. This macro is only used in this file. */ #define MAX_TEXT_ALIGN 32 /* Standard register usage. */ /* Number of actual hardware registers. The hardware registers are assigned numbers for the compiler from 0 to just below FIRST_PSEUDO_REGISTER. All registers that the compiler knows about must be given numbers, even those that are not normally considered general registers. SPARC has 32 integer registers and 32 floating point registers. 64-bit SPARC has 32 additional fp regs, but the odd numbered ones are not accessible. We still account for them to simplify register computations (e.g.: in CLASS_MAX_NREGS). There are also 4 fp condition code registers, so 32+32+32+4 == 100. Register 100 is used as the integer condition code register. Register 101 is used as the soft frame pointer register. */ #define FIRST_PSEUDO_REGISTER 102 #define SPARC_FIRST_FP_REG 32 /* Additional V9 fp regs. */ #define SPARC_FIRST_V9_FP_REG 64 #define SPARC_LAST_V9_FP_REG 95 /* V9 %fcc[0123]. V8 uses (figuratively) %fcc0. */ #define SPARC_FIRST_V9_FCC_REG 96 #define SPARC_LAST_V9_FCC_REG 99 /* V8 fcc reg. */ #define SPARC_FCC_REG 96 /* Integer CC reg. We don't distinguish %icc from %xcc. */ #define SPARC_ICC_REG 100 /* Nonzero if REGNO is an fp reg. */ #define SPARC_FP_REG_P(REGNO) \ ((REGNO) >= SPARC_FIRST_FP_REG && (REGNO) <= SPARC_LAST_V9_FP_REG) /* Argument passing regs. */ #define SPARC_OUTGOING_INT_ARG_FIRST 8 #define SPARC_INCOMING_INT_ARG_FIRST 24 #define SPARC_FP_ARG_FIRST 32 /* 1 for registers that have pervasive standard uses and are not available for the register allocator. On non-v9 systems: g1 is free to use as temporary. g2-g4 are reserved for applications. Gcc normally uses them as temporaries, but this can be disabled via the -mno-app-regs option. g5 through g7 are reserved for the operating system. On v9 systems: g1,g5 are free to use as temporaries, and are free to use between calls if the call is to an external function via the PLT. g4 is free to use as a temporary in the non-embedded case. g4 is reserved in the embedded case. g2-g3 are reserved for applications. Gcc normally uses them as temporaries, but this can be disabled via the -mno-app-regs option. g6-g7 are reserved for the operating system (or application in embedded case). ??? Register 1 is used as a temporary by the 64 bit sethi pattern, so must currently be a fixed register until this pattern is rewritten. Register 1 is also used when restoring call-preserved registers in large stack frames. Registers fixed in arch32 and not arch64 (or vice-versa) are marked in CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-. */ #define FIXED_REGISTERS \ {1, 0, 2, 2, 2, 2, 1, 1, \ 0, 0, 0, 0, 0, 0, 1, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 1, 1, \ \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 0, 0, \ \ 0, 0, 0, 0, 0, 1} /* 1 for registers not available across function calls. These must include the FIXED_REGISTERS and also any registers that can be used without being saved. The latter must include the registers where values are returned and the register where structure-value addresses are passed. Aside from that, you can include as many other registers as you like. */ #define CALL_USED_REGISTERS \ {1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ 0, 0, 0, 0, 0, 0, 0, 0, \ 0, 0, 0, 0, 0, 0, 1, 1, \ \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ 1, 1, 1, 1, 1, 1, 1, 1, \ \ 1, 1, 1, 1, 1, 1} /* If !TARGET_FPU, then make the fp registers and fp cc regs fixed so that they won't be allocated. */ #define CONDITIONAL_REGISTER_USAGE \ do \ { \ if (PIC_OFFSET_TABLE_REGNUM != INVALID_REGNUM) \ { \ fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ call_used_regs[PIC_OFFSET_TABLE_REGNUM] = 1; \ } \ /* If the user has passed -f{fixed,call-{used,saved}}-g5 */ \ /* then honor it. */ \ if (TARGET_ARCH32 && fixed_regs[5]) \ fixed_regs[5] = 1; \ else if (TARGET_ARCH64 && fixed_regs[5] == 2) \ fixed_regs[5] = 0; \ if (! TARGET_V9) \ { \ int regno; \ for (regno = SPARC_FIRST_V9_FP_REG; \ regno <= SPARC_LAST_V9_FP_REG; \ regno++) \ fixed_regs[regno] = 1; \ /* %fcc0 is used by v8 and v9. */ \ for (regno = SPARC_FIRST_V9_FCC_REG + 1; \ regno <= SPARC_LAST_V9_FCC_REG; \ regno++) \ fixed_regs[regno] = 1; \ } \ if (! TARGET_FPU) \ { \ int regno; \ for (regno = 32; regno < SPARC_LAST_V9_FCC_REG; regno++) \ fixed_regs[regno] = 1; \ } \ /* If the user has passed -f{fixed,call-{used,saved}}-g2 */ \ /* then honor it. Likewise with g3 and g4. */ \ if (fixed_regs[2] == 2) \ fixed_regs[2] = ! TARGET_APP_REGS; \ if (fixed_regs[3] == 2) \ fixed_regs[3] = ! TARGET_APP_REGS; \ if (TARGET_ARCH32 && fixed_regs[4] == 2) \ fixed_regs[4] = ! TARGET_APP_REGS; \ else if (TARGET_CM_EMBMEDANY) \ fixed_regs[4] = 1; \ else if (fixed_regs[4] == 2) \ fixed_regs[4] = 0; \ } \ while (0) /* Return number of consecutive hard regs needed starting at reg REGNO to hold something of mode MODE. This is ordinarily the length in words of a value of mode MODE but can be less for certain modes in special long registers. On SPARC, ordinary registers hold 32 bits worth; this means both integer and floating point registers. On v9, integer regs hold 64 bits worth; floating point regs hold 32 bits worth (this includes the new fp regs as even the odd ones are included in the hard register count). */ #define HARD_REGNO_NREGS(REGNO, MODE) \ (TARGET_ARCH64 \ ? ((REGNO) < 32 || (REGNO) == FRAME_POINTER_REGNUM \ ? (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD \ : (GET_MODE_SIZE (MODE) + 3) / 4) \ : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)) /* Due to the ARCH64 discrepancy above we must override this next macro too. */ #define REGMODE_NATURAL_SIZE(MODE) \ ((TARGET_ARCH64 && FLOAT_MODE_P (MODE)) ? 4 : UNITS_PER_WORD) /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE. See sparc.c for how we initialize this. */ extern const int *hard_regno_mode_classes; extern int sparc_mode_class[]; /* ??? Because of the funny way we pass parameters we should allow certain ??? types of float/complex values to be in integer registers during ??? RTL generation. This only matters on arch32. */ #define HARD_REGNO_MODE_OK(REGNO, MODE) \ ((hard_regno_mode_classes[REGNO] & sparc_mode_class[MODE]) != 0) /* Value is 1 if it is OK to rename a hard register FROM to another hard register TO. We cannot rename %g1 as it may be used before the save register window instruction in the prologue. */ #define HARD_REGNO_RENAME_OK(FROM, TO) ((FROM) != 1) /* Value is 1 if it is a good idea to tie two pseudo registers when one has mode MODE1 and one has mode MODE2. If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2, for any hard reg, then this must be 0 for correct output. For V9: SFmode can't be combined with other float modes, because they can't be allocated to the %d registers. Also, DFmode won't fit in odd %f registers, but SFmode will. */ #define MODES_TIEABLE_P(MODE1, MODE2) \ ((MODE1) == (MODE2) \ || (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2) \ && (! TARGET_V9 \ || (GET_MODE_CLASS (MODE1) != MODE_FLOAT \ || (MODE1 != SFmode && MODE2 != SFmode))))) /* Specify the registers used for certain standard purposes. The values of these macros are register numbers. */ /* Register to use for pushing function arguments. */ #define STACK_POINTER_REGNUM 14 /* The stack bias (amount by which the hardware register is offset by). */ #define SPARC_STACK_BIAS ((TARGET_ARCH64 && TARGET_STACK_BIAS) ? 2047 : 0) /* Actual top-of-stack address is 92/176 greater than the contents of the stack pointer register for !v9/v9. That is: - !v9: 64 bytes for the in and local registers, 4 bytes for structure return address, and 6*4 bytes for the 6 register parameters. - v9: 128 bytes for the in and local registers + 6*8 bytes for the integer parameter regs. */ #define STACK_POINTER_OFFSET (FIRST_PARM_OFFSET(0) + SPARC_STACK_BIAS) /* Base register for access to local variables of the function. */ #define HARD_FRAME_POINTER_REGNUM 30 /* The soft frame pointer does not have the stack bias applied. */ #define FRAME_POINTER_REGNUM 101 /* Given the stack bias, the stack pointer isn't actually aligned. */ #define INIT_EXPANDERS \ do { \ if (crtl->emit.regno_pointer_align && SPARC_STACK_BIAS) \ { \ REGNO_POINTER_ALIGN (STACK_POINTER_REGNUM) = BITS_PER_UNIT; \ REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = BITS_PER_UNIT; \ } \ } while (0) /* Base register for access to arguments of the function. */ #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM /* Register in which static-chain is passed to a function. This must not be a register used by the prologue. */ #define STATIC_CHAIN_REGNUM (TARGET_ARCH64 ? 5 : 2) /* Register which holds offset table for position-independent data references. */ #define PIC_OFFSET_TABLE_REGNUM (flag_pic ? 23 : INVALID_REGNUM) /* Pick a default value we can notice from override_options: !v9: Default is on. v9: Default is off. Originally it was -1, but later on the container of options changed to unsigned byte, so we decided to pick 127 as default value, which does reflect an undefined default value in case of 0/1. */ #define DEFAULT_PCC_STRUCT_RETURN 127 /* Functions which return large structures get the address to place the wanted value at offset 64 from the frame. Must reserve 64 bytes for the in and local registers. v9: Functions which return large structures get the address to place the wanted value from an invisible first argument. */ #define STRUCT_VALUE_OFFSET 64 /* Define the classes of registers for register constraints in the machine description. Also define ranges of constants. One of the classes must always be named ALL_REGS and include all hard regs. If there is more than one class, another class must be named NO_REGS and contain no registers. The name GENERAL_REGS must be the name of a class (or an alias for another name such as ALL_REGS). This is the class of registers that is allowed by "g" or "r" in a register constraint. Also, registers outside this class are allocated only when instructions express preferences for them. The classes must be numbered in nondecreasing order; that is, a larger-numbered class must never be contained completely in a smaller-numbered class. For any two classes, it is very desirable that there be another class that represents their union. */ /* The SPARC has various kinds of registers: general, floating point, and condition codes [well, it has others as well, but none that we care directly about]. For v9 we must distinguish between the upper and lower floating point registers because the upper ones can't hold SFmode values. HARD_REGNO_MODE_OK won't help here because reload assumes that register(s) satisfying a group need for a class will also satisfy a single need for that class. EXTRA_FP_REGS is a bit of a misnomer as it covers all 64 fp regs. It is important that one class contains all the general and all the standard fp regs. Otherwise find_reg() won't properly allocate int regs for moves, because reg_class_record() will bias the selection in favor of fp regs, because reg_class_subunion[GENERAL_REGS][FP_REGS] will yield FP_REGS, because FP_REGS > GENERAL_REGS. It is also important that one class contain all the general and all the fp regs. Otherwise when spilling a DFmode reg, it may be from EXTRA_FP_REGS but find_reloads() may use class GENERAL_OR_FP_REGS. This will cause allocate_reload_reg() to die because the compiler thinks it doesn't have a spill reg when in fact it does. v9 also has 4 floating point condition code registers. Since we don't have a class that is the union of FPCC_REGS with either of the others, it is important that it appear first. Otherwise the compiler will die trying to compile _fixunsdfsi because fix_truncdfsi2 won't match its constraints. It is important that SPARC_ICC_REG have class NO_REGS. Otherwise combine may try to use it to hold an SImode value. See register_operand. ??? Should %fcc[0123] be handled similarly? */ enum reg_class { NO_REGS, FPCC_REGS, I64_REGS, GENERAL_REGS, FP_REGS, EXTRA_FP_REGS, GENERAL_OR_FP_REGS, GENERAL_OR_EXTRA_FP_REGS, ALL_REGS, LIM_REG_CLASSES }; #define N_REG_CLASSES (int) LIM_REG_CLASSES /* Give names of register classes as strings for dump file. */ #define REG_CLASS_NAMES \ { "NO_REGS", "FPCC_REGS", "I64_REGS", "GENERAL_REGS", "FP_REGS", \ "EXTRA_FP_REGS", "GENERAL_OR_FP_REGS", "GENERAL_OR_EXTRA_FP_REGS", \ "ALL_REGS" } /* Define which registers fit in which classes. This is an initializer for a vector of HARD_REG_SET of length N_REG_CLASSES. */ #define REG_CLASS_CONTENTS \ {{0, 0, 0, 0}, /* NO_REGS */ \ {0, 0, 0, 0xf}, /* FPCC_REGS */ \ {0xffff, 0, 0, 0}, /* I64_REGS */ \ {-1, 0, 0, 0x20}, /* GENERAL_REGS */ \ {0, -1, 0, 0}, /* FP_REGS */ \ {0, -1, -1, 0}, /* EXTRA_FP_REGS */ \ {-1, -1, 0, 0x20}, /* GENERAL_OR_FP_REGS */ \ {-1, -1, -1, 0x20}, /* GENERAL_OR_EXTRA_FP_REGS */ \ {-1, -1, -1, 0x3f}} /* ALL_REGS */ /* The same information, inverted: Return the class number of the smallest class containing reg number REGNO. This could be a conditional expression or could index an array. */ extern enum reg_class sparc_regno_reg_class[FIRST_PSEUDO_REGISTER]; #define REGNO_REG_CLASS(REGNO) sparc_regno_reg_class[(REGNO)] /* The following macro defines cover classes for Integrated Register Allocator. Cover classes is a set of non-intersected register classes covering all hard registers used for register allocation purpose. Any move between two registers of a cover class should be cheaper than load or store of the registers. The macro value is array of register classes with LIM_REG_CLASSES used as the end marker. */ #define IRA_COVER_CLASSES \ { \ GENERAL_REGS, EXTRA_FP_REGS, FPCC_REGS, LIM_REG_CLASSES \ } /* Defines invalid mode changes. Borrowed from pa64-regs.h. SImode loads to floating-point registers are not zero-extended. The definition for LOAD_EXTEND_OP specifies that integer loads narrower than BITS_PER_WORD will be zero-extended. As a result, we inhibit changes from SImode unless they are to a mode that is identical in size. */ #define CANNOT_CHANGE_MODE_CLASS(FROM, TO, CLASS) \ (TARGET_ARCH64 \ && (FROM) == SImode \ && GET_MODE_SIZE (FROM) != GET_MODE_SIZE (TO) \ ? reg_classes_intersect_p (CLASS, FP_REGS) : 0) /* This is the order in which to allocate registers normally. We put %f0-%f7 last among the float registers, so as to make it more likely that a pseudo-register which dies in the float return register area will get allocated to the float return register, thus saving a move instruction at the end of the function. Similarly for integer return value registers. We know in this case that we will not end up with a leaf function. The register allocator is given the global and out registers first because these registers are call clobbered and thus less useful to global register allocation. Next we list the local and in registers. They are not call clobbered and thus very useful for global register allocation. We list the input registers before the locals so that it is more likely the incoming arguments received in those registers can just stay there and not be reloaded. */ #define REG_ALLOC_ORDER \ { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \ 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \ 15, /* %o7 */ \ 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \ 29, 28, 27, 26, 25, 24, 31, /* %i5-%i0,%i7 */\ 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \ 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \ 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \ 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \ 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \ 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \ 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \ 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \ 96, 97, 98, 99, /* %fcc0-3 */ \ 100, 0, 14, 30, 101} /* %icc, %g0, %o6, %i6, %sfp */ /* This is the order in which to allocate registers for leaf functions. If all registers can fit in the global and output registers, then we have the possibility of having a leaf function. The macro actually mentioned the input registers first, because they get renumbered into the output registers once we know really do have a leaf function. To be more precise, this register allocation order is used when %o7 is found to not be clobbered right before register allocation. Normally, the reason %o7 would be clobbered is due to a call which could not be transformed into a sibling call. As a consequence, it is possible to use the leaf register allocation order and not end up with a leaf function. We will not get suboptimal register allocation in that case because by definition of being potentially leaf, there were no function calls. Therefore, allocation order within the local register window is not critical like it is when we do have function calls. */ #define REG_LEAF_ALLOC_ORDER \ { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \ 29, 28, 27, 26, 25, 24, /* %i5-%i0 */ \ 15, /* %o7 */ \ 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \ 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \ 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \ 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \ 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \ 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \ 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \ 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \ 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \ 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \ 96, 97, 98, 99, /* %fcc0-3 */ \ 100, 0, 14, 30, 31, 101} /* %icc, %g0, %o6, %i6, %i7, %sfp */ #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc () extern char sparc_leaf_regs[]; #define LEAF_REGISTERS sparc_leaf_regs extern char leaf_reg_remap[]; #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO]) /* The class value for index registers, and the one for base regs. */ #define INDEX_REG_CLASS GENERAL_REGS #define BASE_REG_CLASS GENERAL_REGS /* Local macro to handle the two v9 classes of FP regs. */ #define FP_REG_CLASS_P(CLASS) ((CLASS) == FP_REGS || (CLASS) == EXTRA_FP_REGS) /* Predicates for 10-bit, 11-bit and 13-bit signed constants. */ #define SPARC_SIMM10_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x200 < 0x400) #define SPARC_SIMM11_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x400 < 0x800) #define SPARC_SIMM13_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x1000 < 0x2000) /* 10- and 11-bit immediates are only used for a few specific insns. SMALL_INT is used throughout the port so we continue to use it. */ #define SMALL_INT(X) (SPARC_SIMM13_P (INTVAL (X))) /* Predicate for constants that can be loaded with a sethi instruction. This is the general, 64-bit aware, bitwise version that ensures that only constants whose representation fits in the mask 0x00000000fffffc00 are accepted. It will reject, for example, negative SImode constants on 64-bit hosts, so correct handling is to mask the value beforehand according to the mode of the instruction. */ #define SPARC_SETHI_P(X) \ (((unsigned HOST_WIDE_INT) (X) \ & ((unsigned HOST_WIDE_INT) 0x3ff - GET_MODE_MASK (SImode) - 1)) == 0) /* Version of the above predicate for SImode constants and below. */ #define SPARC_SETHI32_P(X) \ (SPARC_SETHI_P ((unsigned HOST_WIDE_INT) (X) & GET_MODE_MASK (SImode))) /* Given an rtx X being reloaded into a reg required to be in class CLASS, return the class of reg to actually use. In general this is just CLASS; but on some machines in some cases it is preferable to use a more restrictive class. */ /* - We can't load constants into FP registers. - We can't load FP constants into integer registers when soft-float, because there is no soft-float pattern with a r/F constraint. - We can't load FP constants into integer registers for TFmode unless it is 0.0L, because there is no movtf pattern with a r/F constraint. - Try and reload integer constants (symbolic or otherwise) back into registers directly, rather than having them dumped to memory. */ #define PREFERRED_RELOAD_CLASS(X,CLASS) \ (CONSTANT_P (X) \ ? ((FP_REG_CLASS_P (CLASS) \ || (CLASS) == GENERAL_OR_FP_REGS \ || (CLASS) == GENERAL_OR_EXTRA_FP_REGS \ || (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT \ && ! TARGET_FPU) \ || (GET_MODE (X) == TFmode \ && ! const_zero_operand (X, TFmode))) \ ? NO_REGS \ : (!FP_REG_CLASS_P (CLASS) \ && GET_MODE_CLASS (GET_MODE (X)) == MODE_INT) \ ? GENERAL_REGS \ : (CLASS)) \ : (CLASS)) /* Return the register class of a scratch register needed to load IN into a register of class CLASS in MODE. We need a temporary when loading/storing a HImode/QImode value between memory and the FPU registers. This can happen when combine puts a paradoxical subreg in a float/fix conversion insn. We need a temporary when loading/storing a DFmode value between unaligned memory and the upper FPU registers. */ #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \ ((FP_REG_CLASS_P (CLASS) \ && ((MODE) == HImode || (MODE) == QImode) \ && (GET_CODE (IN) == MEM \ || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \ && true_regnum (IN) == -1))) \ ? GENERAL_REGS \ : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \ && GET_CODE (IN) == MEM && TARGET_ARCH32 \ && ! mem_min_alignment ((IN), 8)) \ ? FP_REGS \ : (((TARGET_CM_MEDANY \ && symbolic_operand ((IN), (MODE))) \ || (TARGET_CM_EMBMEDANY \ && text_segment_operand ((IN), (MODE)))) \ && !flag_pic) \ ? GENERAL_REGS \ : NO_REGS) #define SECONDARY_OUTPUT_RELOAD_CLASS(CLASS, MODE, IN) \ ((FP_REG_CLASS_P (CLASS) \ && ((MODE) == HImode || (MODE) == QImode) \ && (GET_CODE (IN) == MEM \ || ((GET_CODE (IN) == REG || GET_CODE (IN) == SUBREG) \ && true_regnum (IN) == -1))) \ ? GENERAL_REGS \ : ((CLASS) == EXTRA_FP_REGS && (MODE) == DFmode \ && GET_CODE (IN) == MEM && TARGET_ARCH32 \ && ! mem_min_alignment ((IN), 8)) \ ? FP_REGS \ : (((TARGET_CM_MEDANY \ && symbolic_operand ((IN), (MODE))) \ || (TARGET_CM_EMBMEDANY \ && text_segment_operand ((IN), (MODE)))) \ && !flag_pic) \ ? GENERAL_REGS \ : NO_REGS) /* On SPARC it is not possible to directly move data between GENERAL_REGS and FP_REGS. */ #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE) \ (FP_REG_CLASS_P (CLASS1) != FP_REG_CLASS_P (CLASS2)) /* Get_secondary_mem widens its argument to BITS_PER_WORD which loses on v9 because the movsi and movsf patterns don't handle r/f moves. For v8 we copy the default definition. */ #define SECONDARY_MEMORY_NEEDED_MODE(MODE) \ (TARGET_ARCH64 \ ? (GET_MODE_BITSIZE (MODE) < 32 \ ? mode_for_size (32, GET_MODE_CLASS (MODE), 0) \ : MODE) \ : (GET_MODE_BITSIZE (MODE) < BITS_PER_WORD \ ? mode_for_size (BITS_PER_WORD, GET_MODE_CLASS (MODE), 0) \ : MODE)) /* Return the maximum number of consecutive registers needed to represent mode MODE in a register of class CLASS. */ /* On SPARC, this is the size of MODE in words. */ #define CLASS_MAX_NREGS(CLASS, MODE) \ (FP_REG_CLASS_P (CLASS) ? (GET_MODE_SIZE (MODE) + 3) / 4 \ : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) /* Stack layout; function entry, exit and calling. */ /* Define this if pushing a word on the stack makes the stack pointer a smaller address. */ #define STACK_GROWS_DOWNWARD /* Define this to nonzero if the nominal address of the stack frame is at the high-address end of the local variables; that is, each additional local variable allocated goes at a more negative offset in the frame. */ #define FRAME_GROWS_DOWNWARD 1 /* Offset within stack frame to start allocating local variables at. If FRAME_GROWS_DOWNWARD, this is the offset to the END of the first local allocated. Otherwise, it is the offset to the BEGINNING of the first local allocated. */ #define STARTING_FRAME_OFFSET 0 /* Offset of first parameter from the argument pointer register value. !v9: This is 64 for the ins and locals, plus 4 for the struct-return reg even if this function isn't going to use it. v9: This is 128 for the ins and locals. */ #define FIRST_PARM_OFFSET(FNDECL) \ (TARGET_ARCH64 ? 16 * UNITS_PER_WORD : STRUCT_VALUE_OFFSET + UNITS_PER_WORD) /* Offset from the argument pointer register value to the CFA. This is different from FIRST_PARM_OFFSET because the register window comes between the CFA and the arguments. */ #define ARG_POINTER_CFA_OFFSET(FNDECL) 0 /* When a parameter is passed in a register, stack space is still allocated for it. !v9: All 6 possible integer registers have backing store allocated. v9: Only space for the arguments passed is allocated. */ /* ??? Ideally, we'd use zero here (as the minimum), but zero has special meaning to the backend. Further, we need to be able to detect if a varargs/unprototyped function is called, as they may want to spill more registers than we've provided space. Ugly, ugly. So for now we retain all 6 slots even for v9. */ #define REG_PARM_STACK_SPACE(DECL) (6 * UNITS_PER_WORD) /* Definitions for register elimination. */ #define ELIMINABLE_REGS \ {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} } /* We always pretend that this is a leaf function because if it's not, there's no point in trying to eliminate the frame pointer. If it is a leaf function, we guessed right! */ #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ do { \ if ((TO) == STACK_POINTER_REGNUM) \ (OFFSET) = sparc_compute_frame_size (get_frame_size (), 1); \ else \ (OFFSET) = 0; \ (OFFSET) += SPARC_STACK_BIAS; \ } while (0) /* Keep the stack pointer constant throughout the function. This is both an optimization and a necessity: longjmp doesn't behave itself when the stack pointer moves within the function! */ #define ACCUMULATE_OUTGOING_ARGS 1 /* Value is the number of bytes of arguments automatically popped when returning from a subroutine call. FUNDECL is the declaration node of the function (as a tree), FUNTYPE is the data type of the function (as a tree), or for a library call it is an identifier node for the subroutine name. SIZE is the number of bytes of arguments passed on the stack. */ #define RETURN_POPS_ARGS(FUNDECL,FUNTYPE,SIZE) 0 /* Define this macro if the target machine has "register windows". This C expression returns the register number as seen by the called function corresponding to register number OUT as seen by the calling function. Return OUT if register number OUT is not an outbound register. */ #define INCOMING_REGNO(OUT) \ (((OUT) < 8 || (OUT) > 15) ? (OUT) : (OUT) + 16) /* Define this macro if the target machine has "register windows". This C expression returns the register number as seen by the calling function corresponding to register number IN as seen by the called function. Return IN if register number IN is not an inbound register. */ #define OUTGOING_REGNO(IN) \ (((IN) < 24 || (IN) > 31) ? (IN) : (IN) - 16) /* Define this macro if the target machine has register windows. This C expression returns true if the register is call-saved but is in the register window. */ #define LOCAL_REGNO(REGNO) \ ((REGNO) >= 16 && (REGNO) <= 31) /* Define how to find the value returned by a function. VALTYPE is the data type of the value (as a tree). If the precise function being called is known, FUNC is its FUNCTION_DECL; otherwise, FUNC is 0. */ /* On SPARC the value is found in the first "output" register. */ #define FUNCTION_VALUE(VALTYPE, FUNC) \ function_value ((VALTYPE), TYPE_MODE (VALTYPE), 1) /* But the called function leaves it in the first "input" register. */ #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC) \ function_value ((VALTYPE), TYPE_MODE (VALTYPE), 0) /* Define how to find the value returned by a library function assuming the value has mode MODE. */ #define LIBCALL_VALUE(MODE) \ function_value (NULL_TREE, (MODE), 1) /* 1 if N is a possible register number for a function value as seen by the caller. On SPARC, the first "output" reg is used for integer values, and the first floating point register is used for floating point values. */ #define FUNCTION_VALUE_REGNO_P(N) ((N) == 8 || (N) == 32) /* Define the size of space to allocate for the return value of an untyped_call. */ #define APPLY_RESULT_SIZE (TARGET_ARCH64 ? 24 : 16) /* 1 if N is a possible register number for function argument passing. On SPARC, these are the "output" registers. v9 also uses %f0-%f31. */ #define FUNCTION_ARG_REGNO_P(N) \ (TARGET_ARCH64 \ ? (((N) >= 8 && (N) <= 13) || ((N) >= 32 && (N) <= 63)) \ : ((N) >= 8 && (N) <= 13)) /* Define a data type for recording info about an argument list during the scan of that argument list. This data type should hold all necessary information about the function itself and about the args processed so far, enough to enable macros such as FUNCTION_ARG to determine where the next arg should go. On SPARC (!v9), this is a single integer, which is a number of words of arguments scanned so far (including the invisible argument, if any, which holds the structure-value-address). Thus 7 or more means all following args should go on the stack. For v9, we also need to know whether a prototype is present. */ struct sparc_args { int words; /* number of words passed so far */ int prototype_p; /* nonzero if a prototype is present */ int libcall_p; /* nonzero if a library call */ }; #define CUMULATIVE_ARGS struct sparc_args /* Initialize a variable CUM of type CUMULATIVE_ARGS for a call to a function whose data type is FNTYPE. For a library call, FNTYPE is 0. */ #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL)); /* Update the data in CUM to advance over an argument of mode MODE and data type TYPE. TYPE is null for libcalls where that information may not be available. */ #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \ function_arg_advance (& (CUM), (MODE), (TYPE), (NAMED)) /* Determine where to put an argument to a function. Value is zero to push the argument on the stack, or a hard register in which to store the argument. MODE is the argument's machine mode. TYPE is the data type of the argument (as a tree). This is null for libcalls where that information may not be available. CUM is a variable of type CUMULATIVE_ARGS which gives info about the preceding args and about the function being called. NAMED is nonzero if this argument is a named parameter (otherwise it is an extra parameter matching an ellipsis). */ #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \ function_arg (& (CUM), (MODE), (TYPE), (NAMED), 0) /* Define where a function finds its arguments. This is different from FUNCTION_ARG because of register windows. */ #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED) \ function_arg (& (CUM), (MODE), (TYPE), (NAMED), 1) /* If defined, a C expression which determines whether, and in which direction, to pad out an argument with extra space. The value should be of type `enum direction': either `upward' to pad above the argument, `downward' to pad below, or `none' to inhibit padding. */ #define FUNCTION_ARG_PADDING(MODE, TYPE) \ function_arg_padding ((MODE), (TYPE)) /* If defined, a C expression that gives the alignment boundary, in bits, of an argument with the specified mode and type. If it is not defined, PARM_BOUNDARY is used for all arguments. For sparc64, objects requiring 16 byte alignment are passed that way. */ #define FUNCTION_ARG_BOUNDARY(MODE, TYPE) \ ((TARGET_ARCH64 \ && (GET_MODE_ALIGNMENT (MODE) == 128 \ || ((TYPE) && TYPE_ALIGN (TYPE) == 128))) \ ? 128 : PARM_BOUNDARY) /* Generate the special assembly code needed to tell the assembler whatever it might need to know about the return value of a function. For SPARC assemblers, we need to output a .proc pseudo-op which conveys information to the assembler relating to peephole optimization (done in the assembler). */ #define ASM_DECLARE_RESULT(FILE, RESULT) \ fprintf ((FILE), "\t.proc\t0%lo\n", sparc_type_code (TREE_TYPE (RESULT))) /* Output the special assembly code needed to tell the assembler some register is used as global register variable. SPARC 64bit psABI declares registers %g2 and %g3 as application registers and %g6 and %g7 as OS registers. Any object using them should declare (for %g2/%g3 has to, for %g6/%g7 can) that it uses them and how they are used (scratch or some global variable). Linker will then refuse to link together objects which use those registers incompatibly. Unless the registers are used for scratch, two different global registers cannot be declared to the same name, so in the unlikely case of a global register variable occupying more than one register we prefix the second and following registers with .gnu.part1. etc. */ extern GTY(()) char sparc_hard_reg_printed[8]; #ifdef HAVE_AS_REGISTER_PSEUDO_OP #define ASM_DECLARE_REGISTER_GLOBAL(FILE, DECL, REGNO, NAME) \ do { \ if (TARGET_ARCH64) \ { \ int end = HARD_REGNO_NREGS ((REGNO), DECL_MODE (decl)) + (REGNO); \ int reg; \ for (reg = (REGNO); reg < 8 && reg < end; reg++) \ if ((reg & ~1) == 2 || (reg & ~1) == 6) \ { \ if (reg == (REGNO)) \ fprintf ((FILE), "\t.register\t%%g%d, %s\n", reg, (NAME)); \ else \ fprintf ((FILE), "\t.register\t%%g%d, .gnu.part%d.%s\n", \ reg, reg - (REGNO), (NAME)); \ sparc_hard_reg_printed[reg] = 1; \ } \ } \ } while (0) #endif /* Emit rtl for profiling. */ #define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL) /* All the work done in PROFILE_HOOK, but still required. */ #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0) /* Set the name of the mcount function for the system. */ #define MCOUNT_FUNCTION "*mcount" /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, the stack pointer does not matter. The value is tested only in functions that have frame pointers. No definition is equivalent to always zero. */ #define EXIT_IGNORE_STACK \ (get_frame_size () != 0 \ || cfun->calls_alloca || crtl->outgoing_args_size) /* Define registers used by the epilogue and return instruction. */ #define EPILOGUE_USES(REGNO) ((REGNO) == 31 \ || (crtl->calls_eh_return && (REGNO) == 1)) /* Length in units of the trampoline for entering a nested function. */ #define TRAMPOLINE_SIZE (TARGET_ARCH64 ? 32 : 16) #define TRAMPOLINE_ALIGNMENT 128 /* 16 bytes */ /* Generate RTL to flush the register windows so as to make arbitrary frames available. */ #define SETUP_FRAME_ADDRESSES() \ emit_insn (gen_flush_register_windows ()) /* Given an rtx for the address of a frame, return an rtx for the address of the word in the frame that holds the dynamic chain--the previous frame's address. */ #define DYNAMIC_CHAIN_ADDRESS(frame) \ plus_constant (frame, 14 * UNITS_PER_WORD + SPARC_STACK_BIAS) /* Given an rtx for the frame pointer, return an rtx for the address of the frame. */ #define FRAME_ADDR_RTX(frame) plus_constant (frame, SPARC_STACK_BIAS) /* The return address isn't on the stack, it is in a register, so we can't access it from the current frame pointer. We can access it from the previous frame pointer though by reading a value from the register window save area. */ #define RETURN_ADDR_IN_PREVIOUS_FRAME /* This is the offset of the return address to the true next instruction to be executed for the current function. */ #define RETURN_ADDR_OFFSET \ (8 + 4 * (! TARGET_ARCH64 && cfun->returns_struct)) /* The current return address is in %i7. The return address of anything farther back is in the register window save area at [%fp+60]. */ /* ??? This ignores the fact that the actual return address is +8 for normal returns, and +12 for structure returns. */ #define RETURN_ADDR_RTX(count, frame) \ ((count == -1) \ ? gen_rtx_REG (Pmode, 31) \ : gen_rtx_MEM (Pmode, \ memory_address (Pmode, plus_constant (frame, \ 15 * UNITS_PER_WORD \ + SPARC_STACK_BIAS)))) /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's +12, but always using +8 is close enough for frame unwind purposes. Actually, just using %o7 is close enough for unwinding, but %o7+8 is something you can return to. */ #define INCOMING_RETURN_ADDR_RTX \ plus_constant (gen_rtx_REG (word_mode, 15), 8) #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (15) /* The offset from the incoming value of %sp to the top of the stack frame for the current function. On sparc64, we have to account for the stack bias if present. */ #define INCOMING_FRAME_SP_OFFSET SPARC_STACK_BIAS /* Describe how we implement __builtin_eh_return. */ #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 24 : INVALID_REGNUM) #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, 1) /* %g1 */ #define EH_RETURN_HANDLER_RTX gen_rtx_REG (Pmode, 31) /* %i7 */ /* Select a format to encode pointers in exception handling data. CODE is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is true if the symbol may be affected by dynamic relocations. If assembler and linker properly support .uaword %r_disp32(foo), then use PC relative 32-bit relocations instead of absolute relocs for shared libraries. On sparc64, use pc relative 32-bit relocs even for binaries, to save memory. binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the symbol %r_disp32() is against was not local, but .hidden. In that case, we have to use DW_EH_PE_absptr for pic personality. */ #ifdef HAVE_AS_SPARC_UA_PCREL #ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ (flag_pic \ ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\ : ((TARGET_ARCH64 && ! GLOBAL) \ ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ : DW_EH_PE_absptr)) #else #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ (flag_pic \ ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \ : ((TARGET_ARCH64 && ! GLOBAL) \ ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ : DW_EH_PE_absptr)) #endif /* Emit a PC-relative relocation. */ #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \ do { \ fputs (integer_asm_op (SIZE, FALSE), FILE); \ fprintf (FILE, "%%r_disp%d(", SIZE * 8); \ assemble_name (FILE, LABEL); \ fputc (')', FILE); \ } while (0) #endif /* Addressing modes, and classification of registers for them. */ /* Macros to check register numbers against specific register classes. */ /* These assume that REGNO is a hard or pseudo reg number. They give nonzero only if REGNO is a hard reg of the suitable class or a pseudo reg currently allocated to a suitable hard reg. Since they use reg_renumber, they are safe only once reg_renumber has been allocated, which happens in local-alloc.c. */ #define REGNO_OK_FOR_INDEX_P(REGNO) \ ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < (unsigned)32 \ || (REGNO) == FRAME_POINTER_REGNUM \ || reg_renumber[REGNO] == FRAME_POINTER_REGNUM) #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO) #define REGNO_OK_FOR_FP_P(REGNO) \ (((unsigned) (REGNO) - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)) \ || ((unsigned) reg_renumber[REGNO] - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32))) #define REGNO_OK_FOR_CCFP_P(REGNO) \ (TARGET_V9 \ && (((unsigned) (REGNO) - 96 < (unsigned)4) \ || ((unsigned) reg_renumber[REGNO] - 96 < (unsigned)4))) /* Now macros that check whether X is a register and also, strictly, whether it is in a specified class. These macros are specific to the SPARC, and may be used only in code for printing assembler insns and in conditions for define_optimization. */ /* 1 if X is an fp register. */ #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X))) /* Is X, a REG, an in or global register? i.e. is regno 0..7 or 24..31 */ #define IN_OR_GLOBAL_P(X) (REGNO (X) < 8 || (REGNO (X) >= 24 && REGNO (X) <= 31)) /* Maximum number of registers that can appear in a valid memory address. */ #define MAX_REGS_PER_ADDRESS 2 /* Recognize any constant value that is a valid address. When PIC, we do not accept an address that would require a scratch reg to load into a register. */ #define CONSTANT_ADDRESS_P(X) constant_address_p (X) /* Define this, so that when PIC, reload won't try to reload invalid addresses which require two reload registers. */ #define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X) /* Nonzero if the constant value X is a legitimate general operand. Anything can be made to work except floating point constants. If TARGET_VIS, 0.0 can be made to work as well. */ #define LEGITIMATE_CONSTANT_P(X) legitimate_constant_p (X) /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx and check its validity for a certain class. We have two alternate definitions for each of them. The usual definition accepts all pseudo regs; the other rejects them unless they have been allocated suitable hard regs. The symbol REG_OK_STRICT causes the latter definition to be used. Most source files want to accept pseudo regs in the hope that they will get allocated to the class that the insn wants them to be in. Source files for reload pass need to be strict. After reload, it makes no difference, since pseudo regs have been eliminated by then. */ #ifndef REG_OK_STRICT /* Nonzero if X is a hard reg that can be used as an index or if it is a pseudo reg. */ #define REG_OK_FOR_INDEX_P(X) \ (REGNO (X) < 32 \ || REGNO (X) == FRAME_POINTER_REGNUM \ || REGNO (X) >= FIRST_PSEUDO_REGISTER) /* Nonzero if X is a hard reg that can be used as a base reg or if it is a pseudo reg. */ #define REG_OK_FOR_BASE_P(X) REG_OK_FOR_INDEX_P (X) #else /* Nonzero if X is a hard reg that can be used as an index. */ #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X)) /* Nonzero if X is a hard reg that can be used as a base reg. */ #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X)) #endif /* Should gcc use [%reg+%lo(xx)+offset] addresses? */ #ifdef HAVE_AS_OFFSETABLE_LO10 #define USE_AS_OFFSETABLE_LO10 1 #else #define USE_AS_OFFSETABLE_LO10 0 #endif /* On SPARC, the actual legitimate addresses must be REG+REG or REG+SMALLINT ordinarily. This changes a bit when generating PIC. The details are in sparc.c's implementation of TARGET_LEGITIMATE_ADDRESS_P. */ #define SYMBOLIC_CONST(X) symbolic_operand (X, VOIDmode) #define RTX_OK_FOR_BASE_P(X) \ ((GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) \ || (GET_CODE (X) == SUBREG \ && GET_CODE (SUBREG_REG (X)) == REG \ && REG_OK_FOR_BASE_P (SUBREG_REG (X)))) #define RTX_OK_FOR_INDEX_P(X) \ ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X)) \ || (GET_CODE (X) == SUBREG \ && GET_CODE (SUBREG_REG (X)) == REG \ && REG_OK_FOR_INDEX_P (SUBREG_REG (X)))) #define RTX_OK_FOR_OFFSET_P(X) \ (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0x1000 - 8) #define RTX_OK_FOR_OLO10_P(X) \ (GET_CODE (X) == CONST_INT && INTVAL (X) >= -0x1000 && INTVAL (X) < 0xc00 - 8) /* Go to LABEL if ADDR (a legitimate address expression) has an effect that depends on the machine mode it is used for. In PIC mode, (mem:HI [%l7+a]) is not equivalent to (mem:QI [%l7+a]) (mem:QI [%l7+a+1]) because [%l7+a+1] is interpreted as the address of (a+1). */ #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR, LABEL) \ { \ if (flag_pic == 1) \ { \ if (GET_CODE (ADDR) == PLUS) \ { \ rtx op0 = XEXP (ADDR, 0); \ rtx op1 = XEXP (ADDR, 1); \ if (op0 == pic_offset_table_rtx \ && SYMBOLIC_CONST (op1)) \ goto LABEL; \ } \ } \ } /* Try a machine-dependent way of reloading an illegitimate address operand. If we find one, push the reload and jump to WIN. This macro is used in only one place: `find_reloads_address' in reload.c. For SPARC 32, we wish to handle addresses by splitting them into HIGH+LO_SUM pairs, retaining the LO_SUM in the memory reference. This cuts the number of extra insns by one. Do nothing when generating PIC code and the address is a symbolic operand or requires a scratch register. */ #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \ do { \ /* Decompose SImode constants into hi+lo_sum. We do have to \ rerecognize what we produce, so be careful. */ \ if (CONSTANT_P (X) \ && (MODE != TFmode || TARGET_ARCH64) \ && GET_MODE (X) == SImode \ && GET_CODE (X) != LO_SUM && GET_CODE (X) != HIGH \ && ! (flag_pic \ && (symbolic_operand (X, Pmode) \ || pic_address_needs_scratch (X))) \ && sparc_cmodel <= CM_MEDLOW) \ { \ X = gen_rtx_LO_SUM (GET_MODE (X), \ gen_rtx_HIGH (GET_MODE (X), X), X); \ push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \ BASE_REG_CLASS, GET_MODE (X), VOIDmode, 0, 0, \ OPNUM, TYPE); \ goto WIN; \ } \ /* ??? 64-bit reloads. */ \ } while (0) /* Specify the machine mode that this machine uses for the index in the tablejump instruction. */ /* If we ever implement any of the full models (such as CM_FULLANY), this has to be DImode in that case */ #ifdef HAVE_GAS_SUBSECTION_ORDERING #define CASE_VECTOR_MODE \ (! TARGET_PTR64 ? SImode : flag_pic ? SImode : TARGET_CM_MEDLOW ? SImode : DImode) #else /* If assembler does not have working .subsection -1, we use DImode for pic, as otherwise we have to sign extend which slows things down. */ #define CASE_VECTOR_MODE \ (! TARGET_PTR64 ? SImode : flag_pic ? DImode : TARGET_CM_MEDLOW ? SImode : DImode) #endif /* Define this as 1 if `char' should by default be signed; else as 0. */ #define DEFAULT_SIGNED_CHAR 1 /* Max number of bytes we can move from memory to memory in one reasonably fast instruction. */ #define MOVE_MAX 8 /* If a memory-to-memory move would take MOVE_RATIO or more simple move-instruction pairs, we will do a movmem or libcall instead. */ #define MOVE_RATIO(speed) ((speed) ? 8 : 3) /* Define if operations between registers always perform the operation on the full register even if a narrower mode is specified. */ #define WORD_REGISTER_OPERATIONS /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD will either zero-extend or sign-extend. The value of this macro should be the code that says which one of the two operations is implicitly done, UNKNOWN if none. */ #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND /* Nonzero if access to memory by bytes is slow and undesirable. For RISC chips, it means that access to memory by bytes is no better than access by words when possible, so grab a whole word and maybe make use of that. */ #define SLOW_BYTE_ACCESS 1 /* Define this to be nonzero if shift instructions ignore all but the low-order few bits. */ #define SHIFT_COUNT_TRUNCATED 1 /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits is done just by pretending it is already truncated. */ #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1 /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, return the mode to be used for the comparison. For floating-point, CCFP[E]mode is used. CC_NOOVmode should be used when the first operand is a PLUS, MINUS, NEG, or ASHIFT. CCmode should be used when no special processing is needed. */ #define SELECT_CC_MODE(OP,X,Y) select_cc_mode ((OP), (X), (Y)) /* Return nonzero if MODE implies a floating point inequality can be reversed. For SPARC this is always true because we have a full compliment of ordered and unordered comparisons, but until generic code knows how to reverse it correctly we keep the old definition. */ #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode && (MODE) != CCFPmode) /* A function address in a call instruction for indexing purposes. */ #define FUNCTION_MODE Pmode /* Define this if addresses of constant functions shouldn't be put through pseudo regs where they can be cse'd. Desirable on machines where ordinary constants are expensive but a CALL with constant address is cheap. */ #define NO_FUNCTION_CSE /* alloca should avoid clobbering the old register save area. */ #define SETJMP_VIA_SAVE_AREA /* The _Q_* comparison libcalls return booleans. */ #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode) /* Assume by default that the _Qp_* 64-bit libcalls are implemented such that the inputs are fully consumed before the output memory is clobbered. */ #define TARGET_BUGGY_QP_LIB 0 /* Assume by default that we do not have the Solaris-specific conversion routines nor 64-bit integer multiply and divide routines. */ #define SUN_CONVERSION_LIBFUNCS 0 #define DITF_CONVERSION_LIBFUNCS 0 #define SUN_INTEGER_MULTIPLY_64 0 /* Compute extra cost of moving data between one register class and another. */ #define GENERAL_OR_I64(C) ((C) == GENERAL_REGS || (C) == I64_REGS) #define REGISTER_MOVE_COST(MODE, CLASS1, CLASS2) \ (((FP_REG_CLASS_P (CLASS1) && GENERAL_OR_I64 (CLASS2)) \ || (GENERAL_OR_I64 (CLASS1) && FP_REG_CLASS_P (CLASS2)) \ || (CLASS1) == FPCC_REGS || (CLASS2) == FPCC_REGS) \ ? ((sparc_cpu == PROCESSOR_ULTRASPARC \ || sparc_cpu == PROCESSOR_ULTRASPARC3 \ || sparc_cpu == PROCESSOR_NIAGARA \ || sparc_cpu == PROCESSOR_NIAGARA2) ? 12 : 6) : 2) /* Provide the cost of a branch. For pre-v9 processors we use a value of 3 to take into account the potential annulling of the delay slot (which ends up being a bubble in the pipeline slot) plus a cycle to take into consideration the instruction cache effects. On v9 and later, which have branch prediction facilities, we set it to the depth of the pipeline as that is the cost of a mispredicted branch. On Niagara, normal branches insert 3 bubbles into the pipe and annulled branches insert 4 bubbles. On Niagara-2, a not-taken branch costs 1 cycle whereas a taken branch costs 6 cycles. */ #define BRANCH_COST(speed_p, predictable_p) \ ((sparc_cpu == PROCESSOR_V9 \ || sparc_cpu == PROCESSOR_ULTRASPARC) \ ? 7 \ : (sparc_cpu == PROCESSOR_ULTRASPARC3 \ ? 9 \ : (sparc_cpu == PROCESSOR_NIAGARA \ ? 4 \ : (sparc_cpu == PROCESSOR_NIAGARA2 \ ? 5 \ : 3)))) /* Control the assembler format that we output. */ /* A C string constant describing how to begin a comment in the target assembler language. The compiler assumes that the comment will end at the end of the line. */ #define ASM_COMMENT_START "!" /* Output to assembler file text saying following lines may contain character constants, extra white space, comments, etc. */ #define ASM_APP_ON "" /* Output to assembler file text saying following lines no longer contain unusual constructs. */ #define ASM_APP_OFF "" /* How to refer to registers in assembler output. This sequence is indexed by compiler's hard-register-number (see above). */ #define REGISTER_NAMES \ {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7", \ "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7", \ "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \ "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7", \ "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", \ "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", \ "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", \ "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", \ "%f32", "%f33", "%f34", "%f35", "%f36", "%f37", "%f38", "%f39", \ "%f40", "%f41", "%f42", "%f43", "%f44", "%f45", "%f46", "%f47", \ "%f48", "%f49", "%f50", "%f51", "%f52", "%f53", "%f54", "%f55", \ "%f56", "%f57", "%f58", "%f59", "%f60", "%f61", "%f62", "%f63", \ "%fcc0", "%fcc1", "%fcc2", "%fcc3", "%icc", "%sfp" } /* Define additional names for use in asm clobbers and asm declarations. */ #define ADDITIONAL_REGISTER_NAMES \ {{"ccr", SPARC_ICC_REG}, {"cc", SPARC_ICC_REG}} /* On Sun 4, this limit is 2048. We use 1000 to be safe, since the length can run past this up to a continuation point. Once we used 1500, but a single entry in C++ can run more than 500 bytes, due to the length of mangled symbol names. dbxout.c should really be fixed to do continuations when they are actually needed instead of trying to guess... */ #define DBX_CONTIN_LENGTH 1000 /* This is how to output a command to make the user-level label named NAME defined for reference from other files. */ /* Globalizing directive for a label. */ #define GLOBAL_ASM_OP "\t.global " /* The prefix to add to user-visible assembler symbols. */ #define USER_LABEL_PREFIX "_" /* This is how to store into the string LABEL the symbol_ref name of an internal numbered label where PREFIX is the class of label and NUM is the number within the class. This is suitable for output with `assemble_name'. */ #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ sprintf ((LABEL), "*%s%ld", (PREFIX), (long)(NUM)) /* This is how we hook in and defer the case-vector until the end of the function. */ #define ASM_OUTPUT_ADDR_VEC(LAB,VEC) \ sparc_defer_case_vector ((LAB),(VEC), 0) #define ASM_OUTPUT_ADDR_DIFF_VEC(LAB,VEC) \ sparc_defer_case_vector ((LAB),(VEC), 1) /* This is how to output an element of a case-vector that is absolute. */ #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ do { \ char label[30]; \ ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ if (CASE_VECTOR_MODE == SImode) \ fprintf (FILE, "\t.word\t"); \ else \ fprintf (FILE, "\t.xword\t"); \ assemble_name (FILE, label); \ fputc ('\n', FILE); \ } while (0) /* This is how to output an element of a case-vector that is relative. (SPARC uses such vectors only when generating PIC.) */ #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ do { \ char label[30]; \ ASM_GENERATE_INTERNAL_LABEL (label, "L", (VALUE)); \ if (CASE_VECTOR_MODE == SImode) \ fprintf (FILE, "\t.word\t"); \ else \ fprintf (FILE, "\t.xword\t"); \ assemble_name (FILE, label); \ ASM_GENERATE_INTERNAL_LABEL (label, "L", (REL)); \ fputc ('-', FILE); \ assemble_name (FILE, label); \ fputc ('\n', FILE); \ } while (0) /* This is what to output before and after case-vector (both relative and absolute). If .subsection -1 works, we put case-vectors at the beginning of the current section. */ #ifdef HAVE_GAS_SUBSECTION_ORDERING #define ASM_OUTPUT_ADDR_VEC_START(FILE) \ fprintf(FILE, "\t.subsection\t-1\n") #define ASM_OUTPUT_ADDR_VEC_END(FILE) \ fprintf(FILE, "\t.previous\n") #endif /* This is how to output an assembler line that says to advance the location counter to a multiple of 2**LOG bytes. */ #define ASM_OUTPUT_ALIGN(FILE,LOG) \ if ((LOG) != 0) \ fprintf (FILE, "\t.align %d\n", (1<<(LOG))) /* This is how to output an assembler line that says to advance the location counter to a multiple of 2**LOG bytes using the "nop" instruction as padding. */ #define ASM_OUTPUT_ALIGN_WITH_NOP(FILE,LOG) \ if ((LOG) != 0) \ fprintf (FILE, "\t.align %d,0x1000000\n", (1<<(LOG))) #define ASM_OUTPUT_SKIP(FILE,SIZE) \ fprintf (FILE, "\t.skip "HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)) /* This says how to output an assembler line to define a global common symbol. */ #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ ( fputs ("\t.common ", (FILE)), \ assemble_name ((FILE), (NAME)), \ fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\"\n", (SIZE))) /* This says how to output an assembler line to define a local common symbol. */ #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGNED) \ ( fputs ("\t.reserve ", (FILE)), \ assemble_name ((FILE), (NAME)), \ fprintf ((FILE), ","HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\",%u\n", \ (SIZE), ((ALIGNED) / BITS_PER_UNIT))) /* A C statement (sans semicolon) to output to the stdio stream FILE the assembler definition of uninitialized global DECL named NAME whose size is SIZE bytes and alignment is ALIGN bytes. Try to use asm_output_aligned_bss to implement this macro. */ #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ do { \ ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \ } while (0) #define IDENT_ASM_OP "\t.ident\t" /* Output #ident as a .ident. */ #define ASM_OUTPUT_IDENT(FILE, NAME) \ fprintf (FILE, "%s\"%s\"\n", IDENT_ASM_OP, NAME); /* Prettify the assembly. */ extern int sparc_indent_opcode; #define ASM_OUTPUT_OPCODE(FILE, PTR) \ do { \ if (sparc_indent_opcode) \ { \ putc (' ', FILE); \ sparc_indent_opcode = 0; \ } \ } while (0) #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \ ((CHAR) == '#' || (CHAR) == '*' || (CHAR) == '(' \ || (CHAR) == ')' || (CHAR) == '_' || (CHAR) == '&') /* Print operand X (an rtx) in assembler syntax to file FILE. CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified. For `%' followed by punctuation, CODE is the punctuation and X is null. */ #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE) /* Print a memory address as an operand to reference that memory location. */ #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \ { register rtx base, index = 0; \ int offset = 0; \ register rtx addr = ADDR; \ if (GET_CODE (addr) == REG) \ fputs (reg_names[REGNO (addr)], FILE); \ else if (GET_CODE (addr) == PLUS) \ { \ if (GET_CODE (XEXP (addr, 0)) == CONST_INT) \ offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\ else if (GET_CODE (XEXP (addr, 1)) == CONST_INT) \ offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\ else \ base = XEXP (addr, 0), index = XEXP (addr, 1); \ if (GET_CODE (base) == LO_SUM) \ { \ gcc_assert (USE_AS_OFFSETABLE_LO10 \ && TARGET_ARCH64 \ && ! TARGET_CM_MEDMID); \ output_operand (XEXP (base, 0), 0); \ fputs ("+%lo(", FILE); \ output_address (XEXP (base, 1)); \ fprintf (FILE, ")+%d", offset); \ } \ else \ { \ fputs (reg_names[REGNO (base)], FILE); \ if (index == 0) \ fprintf (FILE, "%+d", offset); \ else if (GET_CODE (index) == REG) \ fprintf (FILE, "+%s", reg_names[REGNO (index)]); \ else if (GET_CODE (index) == SYMBOL_REF \ || GET_CODE (index) == LABEL_REF \ || GET_CODE (index) == CONST) \ fputc ('+', FILE), output_addr_const (FILE, index); \ else gcc_unreachable (); \ } \ } \ else if (GET_CODE (addr) == MINUS \ && GET_CODE (XEXP (addr, 1)) == LABEL_REF) \ { \ output_addr_const (FILE, XEXP (addr, 0)); \ fputs ("-(", FILE); \ output_addr_const (FILE, XEXP (addr, 1)); \ fputs ("-.)", FILE); \ } \ else if (GET_CODE (addr) == LO_SUM) \ { \ output_operand (XEXP (addr, 0), 0); \ if (TARGET_CM_MEDMID) \ fputs ("+%l44(", FILE); \ else \ fputs ("+%lo(", FILE); \ output_address (XEXP (addr, 1)); \ fputc (')', FILE); \ } \ else if (flag_pic && GET_CODE (addr) == CONST \ && GET_CODE (XEXP (addr, 0)) == MINUS \ && GET_CODE (XEXP (XEXP (addr, 0), 1)) == CONST \ && GET_CODE (XEXP (XEXP (XEXP (addr, 0), 1), 0)) == MINUS \ && XEXP (XEXP (XEXP (XEXP (addr, 0), 1), 0), 1) == pc_rtx) \ { \ addr = XEXP (addr, 0); \ output_addr_const (FILE, XEXP (addr, 0)); \ /* Group the args of the second CONST in parenthesis. */ \ fputs ("-(", FILE); \ /* Skip past the second CONST--it does nothing for us. */\ output_addr_const (FILE, XEXP (XEXP (addr, 1), 0)); \ /* Close the parenthesis. */ \ fputc (')', FILE); \ } \ else \ { \ output_addr_const (FILE, addr); \ } \ } /* TLS support defaulting to original Sun flavor. GNU extensions must be activated in separate configuration files. */ #ifdef HAVE_AS_TLS #define TARGET_TLS 1 #else #define TARGET_TLS 0 #endif #define TARGET_SUN_TLS TARGET_TLS #define TARGET_GNU_TLS 0 /* The number of Pmode words for the setjmp buffer. */ #define JMP_BUF_SIZE 12 /* We use gcc _mcount for profiling. */ #define NO_PROFILE_COUNTERS 0
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